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Troubleshooting

PROBLEMS/SOLUTIONS...

PROBLEM: CHECK FOR: WHAT TO DO:
RIFLE WON’T FIRE

SELECTOR LEVER ON SAFE

IMPROPER ASSEMBLY OF FIRING PIN

 

 

 

 

 

 

 

 

 

TOO MUCH OIL IN FIRING PIN RECESS

 

 

 

 

 

 

 

 

DEFECTIVE AMMUNITION

 

TOO MUCH CARBON ON FIRING PIN OR IN FIRING PIN RECESS

 

 

 

 

 

 

 

PUT IT ON FIRE

ASSEMBLE CORRECTLY
RETAINING PIN GOES IN BACK OF LARGE SHOULDER ON FIRING PIN

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WIPE OUT WITH PIPE CLEANER

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REMOVE AND DISCARD

 

CLEAN

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BOLT WON’T UNLOCK DIRTY OR BURRED BOLT CLEAN, OR SEE YOUR GUNSMITH
WON’T EXTRACT

BROKEN EXTRACTOR SPRING

DIRTY OR CORRODED AMMO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CARBON IN CHAMBER

FOULING OR CARBON IN EXTRACTOR RECESS OR LIP

 

 

 

 

SEE YOUR GUNSMITH

REMOVE STUCK ROUND

PUSH OUT WITH CLEANING ROD

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CLEAN CHAMBER

CLEAN EXTRACTOR

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WON’T FEED

DIRTY OR CORRODED AMMO

DIRTY MAGAZINE

DEFECTIVE MAGAZINE

TOO MANY ROUNDS IN MAGAZINE

ACTION OF BUFFER ASSEMBLY IS RESTRICTED

MAGAZINE NOT FULLY SEATED

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CLEAN

CLEAN

REPLACE

TAKE OUT EXCESS

TAKE OUT BUFFER AND SPRING - CLEAN THEM

ADJUST MAGAZINE CATCH: PRESS MAGAZINE
CATCH BUTTON ON RIGHT SIDE

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TURN CATCH CLOCKWISE TO TIGHTEN AND
COUNTERCLOCKWISE TO LOOSEN

TURN CATCH ON LEFT SIDE

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DOUBLE FEED DEFECTIVE MAGAZINE REPLACE
WON’T CHAMBER

DIRTY OR CORRODED AMMO

DAMAGED AMMO

CARBON IN CHAMBER OR ON GAS TUBE

 

 

 

 

 

 

 

CLEAN

REPLACE

CLEAN

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WON’T LOCK DIRT, CORROSION, OR CARBON BUILDUP IN BARREL LOCKING LUGS

CLEAN LUGS

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WON’T EXTRACT

FROZEN EXTRACTOR

RESTRICTED BUFFER ASSEMBLY

 

 

 

 

 

 

 

 

 

 

 

 

RESTRICTED MOVEMENT OF BOLT CARRIER GROUP

 

 

REMOVE AND CLEAN

REMOVE AND CLEAN

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REMOVE, CLEAN, AND LUBE (BEFORE PUTTING BOLT BACK IN, MAKE SURE GAS TUBE FITS INTO CARRIER KEY AND THAT THE CARRIER MOVES FREELY)

SHORT RECOIL

CORRECT ALIGNMENT OF GAPS IN BOLT GAS RINGS

TIP: Gas Rings should be replaced every 3,000 Rounds

 

 

 

 

 

 

 

 

CARBON OR DIRT IN CARRIER KEY OR ON
OUTSIDE OF GAS TUBE

 

 

 

 

 

Q-TIP, PIPE CLEANER PIECES, OR OTHER DEBRIS STUCK INSIDE CARRIER KEY

 

 

 

 

 

 

 

 

 

“GAPS” IN THE 3 GAS RINGS SHOULD BE STAGGERED 120° AROUND THE BOLT BODY FOR MAXIMUM EFFECTIVENESS

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Note: Third Gap not visible in this picture - position
on back side of bolt

CLEAN CARRIER KEY OR AROUND THE GAS TUBE

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CLEAN OUT IF POSSIBLE OR HAVE RIFLE
CHECKED BY YOUR GUNSMITH

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BOLT FAILS TO LOCK AFTER LAST ROUND

DIRTY OR CORRODED BOLT LATCH

 

 

FAULTY MAGAZINE

CLEAN - OR REPLACE - BOLT CATCH CHECK FOR BUFFER ENDCAP BACKOUT OR OBSTRUCTION
CHECK FOR FULL TRAVEL OF BOLT CARRIER

REPLACE

SELECTOR LEVER BINDS

NEEDS OIL

DIRT OR SAND UNDER TRIGGER

LUBRICATE WITH CLP

CLEAN

BOLT CARRIER “HUNG UP”

ROUND JAMMED BETWEEN BOLT AND CHARGING HANDLE AND/OR DOUBLE FEED

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  1. REMOVE MAGAZINE.
  2. PUSH IN ON THE BOTTOM OF THE BOLT LATCH.
  3. WHILE PULLING DOWN ON CHARGING HANDLE, TAP THE RIFLE BUTT ON THE GROUND. BOLT SHOULD LOCK TO THE REAR.
  4. WHILE BOLT IS HELD TO THE REAR, ROUND SHOULD FALL THROUGH THE MAGAZINE WELL.

NOTE: IF THIS PROCEDURE FAILS, USE A SECTION OF CLEANING ROD TO PUSH THE BOLT FULLY TO REAR THROUGH THE EJECTION PORT.

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COLD WEATHER SHOOTING…

If cold weather requires it, your Bushmaster can be shot with gloved or mittened hands. The Trigger Guard is designed to open and swing down allowing better access to Trigger when the shooter is wearing gloves or mittens.

  1. Push in Forward Trigger Guard Pin with Bullet tip to release Trigger Guard.
    xm15_c15_109-cold-01.png
  2. Swing Trigger Guard down for shooting with gloves or mittens.
    xm15_c15_110-cold-02.png

alert.pngCAUTION: Be careful of accidental discharges when inserting gloved fingers into Trigger Guard area.

MAINTENANCE IN EXTREME WEATHER…

EXTREME COLD: Clean and lubricate Rifle in a warm room with Rifle at room temperature. Do not lay a warm Rifle directly on snow or ice. Moving Rifle from cold into warmth will cause condensation which could keep Rifle from functioning.

HOT, WET CLIMATES: Clean and lube Rifle more frequently in moist climates. Inspect hidden surfaces of Bolt and Carrier Assembly, Upper Receiver, and Chamber / Barrel Extension (Locking Lugs), and Lower Receiver and Receiver Extension Assembly (Buffer Tube) for rust or corrosion. Also pay close attention to the Spring Loaded Detents on the rifle. Wipe off any hand / finger prints on the Rifle as they can accelerate the onset of rust or corrosion.

HOT, DRY CLIMATES: Take extra care with cleaning and lubrication as rifle will be exposed to blowing sand and fine dust, and extreme temperature shifts (hot in the daytime, freezing at night). Corrosion is less likely to form on metal parts in a dry climate. Lightly lube functional parts only - too much lubrication can attract and hold dust and sand.

RAINS: DO NOT FIRE THE RIFLE IF WATER IS PRESENT IN THE BARREL. Excess pressure can cause the Rifle to explode. ALWAYS drain any water from Barrel prior to firing. Dry the Bore with a Swab and Cleaning Rod if wet.

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